CN107023736B - A kind of stiffness-adjustable rack foot pad - Google Patents
A kind of stiffness-adjustable rack foot pad Download PDFInfo
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- CN107023736B CN107023736B CN201710294400.1A CN201710294400A CN107023736B CN 107023736 B CN107023736 B CN 107023736B CN 201710294400 A CN201710294400 A CN 201710294400A CN 107023736 B CN107023736 B CN 107023736B
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- elastic component
- pressing plate
- foot pad
- elastic
- stiffness
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M7/00—Details of attaching or adjusting engine beds, frames, or supporting-legs on foundation or base; Attaching non-moving engine parts, e.g. cylinder blocks
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The present invention relates to technical field of sewing machines, more particularly to a kind of stiffness-adjustable rack foot pad, elastic supporting member for supporting optical member including pressing plate and resilient support pressing plate for being connect with rack, elastic supporting member for supporting optical member includes the first elastic component and the second elastic component, and the first elastic component and the second elastic component relative dislocation nesting and spacing distance are adjustably arranged on the lower section of pressing plate.By adjusting the spacing distance between the first elastic component and the second elastic component, the rigidity of adjustable foot pad, realize the adjusting of foot pad resonant frequency, to enable the rigidity of foot pad and resonant frequency to reach the state with complete machine best match, therefore the best vibration damping rigidity of foot pad can be quickly determined by debugging, foot pad without replacing plurality of specifications tests determination one by one, not only substantially increase research and development and debugging efficiency, and reduce the specification type of foot pad, have the advantages that versatility is good, at low cost, structure is simple, debugging is convenient, and has the effect of vibration damping.
Description
Technical field
The present invention relates to technical field of sewing machines more particularly to a kind of stiffness-adjustable rack foots pad.
Background technique
Existing relatively large sewing machine, such as template machine and pattern sewing machine are all made of support foot of the footed glass as entire rack
Pad.Footed glass specification is various, and the footed glass of every kind of specification all has the structure and rigidity of each self-retaining, once specification selection is improper,
The rigidity and machine of footed glass mismatch, it is possible to which the resonant frequency of the working speed and footed glass that lead to complete machine is close, to lead
It causes complete machine oscillation very big, seriously affects the competitiveness of product.And find it is a can with complete machine matched, resonant frequency far from whole
The footed glass of machine working speed can only be tested just can determine that one by one by purchasing the footed glass of plurality of specifications, and not only efficiency of research and development is very
It is low, finally determining footed glass also may not be exactly matched with complete machine it is optimal.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of rigidity and the adjustable rack foots pad of resonant frequency, to overcome
The drawbacks described above of the prior art.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme: a kind of stiffness-adjustable rack foot pad, packet
Include pressing plate for connecting with rack and flexibly support the elastic supporting member for supporting optical member of pressing plate, elastic supporting member for supporting optical member include the first elastic component and
Second elastic component, the first elastic component and the second elastic component relative dislocation is nested and spacing distance is adjustably arranged under pressing plate
Side.
Preferably, the first elastic component and/or the second elastic component and pressing plate are detachably connected, and the first elastic component and/or
The direction that the link position of second elastic component and pressing plate can be directed toward the second elastic component along the first elastic component is adjusted.
Preferably, the waist-shaped hole of multiple pressing plates up and down is offered on pressing plate, and the long axis of waist-shaped hole is along the first elasticity
The direction that part is directed toward the second elastic component extends；First elastic component and/or the second elastic component are connect by connection component with waist-shaped hole,
And position-adjustable of the connection component in waist-shaped hole.
Preferably, connection component includes screw and nut, offers through-hole on the first elastic component and/or the second elastic component,
Screw passes through through-hole and waist-shaped hole and is cooperatively connected with nut.
Preferably, nut is located at the top of pressing plate, and screw also extends through an elastomeric pad being set between pressing plate and nut.
Preferably, the first elastic component and the second elastic component are U-typed part, U-typed part include bottom edge and from bottom edge two
What side was extended is in two sides opposing upper and lower, is offered on two sides for realizing the first elastic component and the second elasticity
The notch of part relative dislocation nesting.
It preferably, further include connecting column, one end of connecting column is connect with pressing plate, and the other end is connect with rack.
Preferably, connecting column is connect in the center of pressing plate with pressing plate.
Compared with prior art, the present invention has significant progress:
(1) pressing plate, the meeting when power that rack acts on pressing plate is transferred to elastic supporting member for supporting optical member are flexibly supported by elastic supporting member for supporting optical member
Make elastic supporting member for supporting optical member that flexible deformation occur, also, with the cyclically-varying of frame vibration inertia force direction and size, elasticity branch
The elastic deformation amount of support member also can generating period variation, therefore the vibrational energy of rack can be with the high frequency distortions of elastic supporting member for supporting optical member
Dissipation is gone out, to achieve the effect that vibration damping.
(2) by adjusting the spacing distance between the first elastic component and the second elastic component, the rigidity of adjustable foot pad is real
The adjusting of existing foot pad resonant frequency, so that the rigidity of foot pad and resonant frequency is enable to reach the state with complete machine best match,
Therefore the best vibration damping rigidity of foot pad can be quickly determined by debugging, the foot pad without replacing plurality of specifications is tested really one by one
It is fixed, research and development and debugging efficiency are not only substantially increased, but also reduce the specification type of foot pad, good, at low cost with versatility,
The advantage that structure is simple, debugging is convenient.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the stiffness-adjustable rack foot pad of the embodiment of the present invention.
Fig. 2 is the decomposition diagram of the stiffness-adjustable rack foot pad of the embodiment of the present invention.
In figure:
1, pressing plate 10, waist-shaped hole 11, through hole
2, elastic supporting member for supporting optical member 20, through-hole 21, the first elastic component
22, the second elastic component 201, bottom edge 202, upper side edge
203, lower side 204, notch 3, connection component
31, screw 32, nut 33, elastomeric pad
34, the first gasket 35, the second gasket
4, connecting column 5, attaching nut
Specific embodiment
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing.These embodiments are only used for
Illustrate the present invention, and not limitation of the present invention.
In the description of the present invention, it should be noted that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply opposite
Importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention.
In addition, in the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.
As depicted in figs. 1 and 2, a kind of embodiment of stiffness-adjustable rack foot pad of the invention.The rigidity of the present embodiment
Adjustable frame foot pad can be used for being arranged in the lower section of sewing machine frame, the support foot pad as entire rack.
Specifically, as shown in Figure 1, the stiffness-adjustable rack foot pad of the present embodiment includes pressing plate 1 and elastic supporting member for supporting optical member 2,
For pressing plate 1 for connecting with rack, elastic supporting member for supporting optical member 2 flexibly supports pressing plate 1, and the power that rack acts on pressing plate 1 is transferred to elasticity
It can make elastic supporting member for supporting optical member 2 that flexible deformation occur when supporting element 2, also, with frame vibration inertia force direction and the period of size
Property variation, the elastic deformation amount of elastic supporting member for supporting optical member 2 also can generating period variation, therefore the vibrational energy of rack can with elasticity prop up
The high frequency distortions of support member 2 dissipate away, to achieve the effect that vibration damping.
Elastic supporting member for supporting optical member 2 in the present embodiment includes the first elastic component 21 and the second elastic component 22,21 He of the first elastic component
Second elastic component, 22 relative dislocation is nestedly set to the lower section of pressing plate 1, and between the first elastic component 21 and the second elastic component 22
Spacing distance is adjustable.Under the action of identical power, the elastic deformation amount of elastic supporting member for supporting optical member 2 and the first elastic component 21 and the second bullet
Spacing distance between property part 22 is related, and the spacing distance is bigger, and the elastic deformation amount of elastic supporting member for supporting optical member 2 is bigger, and foot pad is whole
The rigidity of body is then smaller；Conversely, the rigidity of foot pad entirety is then bigger.Therefore, by adjusting the first elastic component 21 and the second elasticity
Spacing distance between part 22, the rigidity of adjustable foot pad realize the adjusting of foot pad resonant frequency, to make the rigidity of foot pad
And resonant frequency can reach the state with complete machine best match.The stiffness-adjustable rack foot pad of the present embodiment can be with as a result,
The best vibration damping rigidity that foot pad is quickly determined by debugging, the foot pad without replacing plurality of specifications test determination one by one, not only
Research and development and debugging efficiency are substantially increased, and reduce the specification type of foot pad, with versatility is good, at low cost, structure is simple
Advantage single, debugging is convenient.
Further, adjustable, the first elasticity to realize spacing distance between the first elastic component 21 and the second elastic component 22
Part 21 and/or the second elastic component 22 and pressing plate 1 are detachably connected, and the first elastic component 21 and/or the second elastic component 22 and pressure
The direction that the link position of plate 1 can be directed toward the second elastic component 22 along the first elastic component 21 is adjusted.That is the first elastic component 21 and second
At least one in elastic component 22 is detachably connected with pressing plate 1 and the side of the second elastic component 22 can be directed toward along the first elastic component 21
To the link position adjusted with pressing plate 1, to realize the adjusting of spacing distance between the first elastic component 21 and the second elastic component 22.
Preferably, in the present embodiment, the first elastic component 21 and the second elastic component 22 are detachably connected with pressing plate 1,
Also, the first elastic component 21 and the second elastic component 22 can along the first elastic component 21 be directed toward the second elastic component 22 direction adjust with
The link position of pressing plate 1 can also as a result, while adjusting spacing distance between the first elastic component 21 and the second elastic component 22
To keep elastic supporting member for supporting optical member 2 to be integrally located at the underface of pressing plate 1, to guarantee that elastic supporting member for supporting optical member 2 is good to the support effect of pressing plate 1
It is good.Certainly, in the first elastic component 21 and the second elastic component 22 only one it is detachably connected with pressing plate 1 and can be along the first elasticity
When the direction that part 21 is directed toward the second elastic component 22 is adjusted with the link position of pressing plate 1, the first elastic component 21 and the also may be implemented
The adjusting of spacing distance between two elastic components 22.
Further, to realize that the first elastic component 21 and/or the second elastic component 22 are detachably connected with pressing plate 1 and can be along the
The direction that one elastic component 21 is directed toward the second elastic component 22 adjusts the link position with pressing plate 1, is offered above and below multiple on pressing plate 1
The waist-shaped hole 10 of pressing plate is penetrated through, and the long axis of waist-shaped hole 10 extends along the direction that the first elastic component 21 is directed toward the second elastic component 22.
First elastic component 21 and/or the second elastic component 22 are connect by connection component 3 with waist-shaped hole 10, and connection component 3 is in waist-shaped hole
Position-adjustable in 10.By adjusting position of the connection component 3 in waist-shaped hole 10, can be realized the first elastic component 21 and/
Or second elastic component 22 and 1 link position of pressing plate adjusting.
Preferably, as shown in Fig. 2, being set side by side in the present embodiment, on pressing plate 1 there are four waist-shaped hole 10, the first elastic component
21 and second elastic component 22 connect correspondingly each by two groups of connection components 3 with two waist-shaped holes 10, it is possible thereby to protect
The first elastic component 21 and the second elastic component 22 are demonstrate,proved when adjusting the link position with pressing plate 1 along the side that 10 long axis of waist-shaped hole extends
To the direction that i.e. the first elastic component 21 is directed toward the second elastic component 22 is mobile, to guarantee the accurate and effective adjusted, realizes fast velocity modulation
Examination.
Further, connection component 3 includes screw 31 and nut 32, is opened on the first elastic component 21 and/or the second elastic component 22
Equipped with through-hole 20, screw 31 passes through the waist-shaped hole 10 on through-hole 20 and pressing plate 1 and is cooperatively connected with nut 32.When tightening nut 32
When, the first elastic component 21 and/or the second elastic component 22 are fastenedly connected by screw 31 and nut 32 with pressing plate 1；When unscrewing nut 32
When, screw 31 can move in waist-shaped hole 10, and drive the first elastic component 21 and/or the second elastic component 22 mobile, to change
The relative position of first elastic component 21 and/or the second elastic component 22 and pressing plate 1, and then change the first elastic component 21 and the second elasticity
Relative position between part 22.It is thus achieved that the first elastic component 21 and/or the second elastic component 22 pass through connection component 3 and waist type
Hole 10 is detachably connected, and position-adjustable of the connection component 3 in waist-shaped hole 10.
In the present embodiment, open up that there are two through-hole 20, each through-holes on the first elastic component 21 and the second elastic component 22
20 respectively correspond to a waist-shaped hole 10 on pressing plate 1, and each through-hole 20 passes through a screw 31 and a nut 32 and one
A waist-shaped hole 10 connects.
Further, in the present embodiment, nut 32 is located at the top of pressing plate 1, and screw 31 also extends through one and is set to pressing plate 1 and nut
Elastomeric pad 33 between 32.Elastomeric pad 33 can play the role of vibration damping.
Further, in the present embodiment, the first gasket is equipped between the first elastic component 21 or the second elastic component 22 and pressing plate 1
34, between pressing plate and elastomeric pad 33 be equipped with the second gasket 35, screw 31 sequentially pass through from bottom to up the first elastic component 21 or
Second elastic component 22, the first gasket 34, pressing plate 1, the second gasket 35 and elastomeric pad 33 are connect with nut 32.
Further, in the present embodiment, the first elastic component 21 and the second elastic component 22 are U-typed part, and U-typed part includes bottom
Side 201 and extend from the two sides on bottom edge 201 in two sides opposing upper and lower, i.e. upper side edge 202 and lower side 203, on
It is offered on side 202 and lower side 203 nested with 22 relative dislocation of the second elastic component for realizing the first elastic component 21
Notch 204.Pressing plate 1 is connected with the upper side edge 202 of the first elastic component 21 and the second elastic component 22.In the present embodiment, the first bullet
Two through-holes 20 on property part 21 and the second elastic component 22 are provided on upper side edge 202, and two through-holes 20 be located at it is scarce
The two sides of mouth 204.
Certainly, the shape of the first elastic component of the invention and the second elastic component is not limited to the U-typed part of the present embodiment,
What can also be taken other form can occur the elastic component of flexible deformation, such as open rectangle part, " C " type part under external force
Or cantilever slab etc..
Further, anti-abrasion pad can also be arranged in the bottom of the first elastic component 21 and the second elastic component 22 (not show in figure
Out), anti-abrasion pad can be made of rubber or plastics, can be played the role of abrasionproof and be filled and led up.
The material of the first elastic component 21 and the second elastic component 22 is not limited in the present embodiment, can use metal material system
At, it is made for example, by using spring steel, it is elastic enough, and there is stronger support strength, it is suitable for various types of machines；It can also
It is made of plastic to adopt, it is suitable for requiring lower small machines to support strength.
Further, the stiffness-adjustable rack foot pad of the present embodiment further includes connecting column 4, one end of connecting column 4 and pressing plate 1
Connection, the other end of connecting column 4 are connect with rack.
Preferably, connecting column 4 is connect in the center of pressing plate 1 with pressing plate 1.In the present embodiment, connecting column 4 is a connection
Stud, connecting stud are equipped with external screw thread, and the center of pressing plate 1 offers through hole 11, and the lower end of connecting stud is arranged in
Perforation 11 on pressing plate 1, and the upper and lower on connecting stud in pressing plate 1 is connected separately with an attaching nut 5, to realize
Connecting stud lower end is fastenedly connected with pressing plate 1, and the upper end of connecting stud is then used to connect rack.
In conclusion the stiffness-adjustable rack foot pad of the present embodiment, can be consumed by the high frequency distortions of elastic supporting member for supporting optical member 2
The vibrational energy for dissipating rack, achievees the effect that vibration damping.By adjusting the interval between the first elastic component 21 and the second elastic component 22
Distance, the rigidity of adjustable foot pad realize the adjusting of foot pad resonant frequency, to enable the rigidity and resonant frequency of foot pad
Reach the state with complete machine best match, therefore can quickly determine the best vibration damping rigidity of foot pad by debugging, without more
The foot pad for changing plurality of specifications tests determination one by one, not only substantially increases research and development and debugging efficiency, but also reduces the rule of foot pad
Lattice type has the advantages that versatility is good, at low cost, structure is simple, debugging is convenient.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and replacement can also be made, these are improved and replacement
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of stiffness-adjustable rack foot pad, which is characterized in that including the pressing plate (1) and elasticity branch for being connect with rack
The elastic supporting member for supporting optical member (2) of the pressing plate (1) is supportted, the elastic supporting member for supporting optical member (2) includes the first elastic component (21) and the second elastic component
(22), first elastic component (21) is nested with the second elastic component (22) relative dislocation and spacing distance be adjustably arranged on it is described
The lower section of pressing plate (1)；First elastic component (21) and/or second elastic component (22) and the pressing plate (1) are removably
Connection, and first elastic component (21) and/or second elastic component (22) and the link position of the pressing plate (1) can be along institutes
State the direction adjusting that the first elastic component (21) are directed toward second elastic component (22).
2. stiffness-adjustable rack foot pad according to claim 1, which is characterized in that offered on the pressing plate (1) more
The waist-shaped hole (10) of a pressing plate (1) described up and down, and the long axis of the waist-shaped hole (10) is along first elastic component (21)
The direction for being directed toward second elastic component (22) extends；First elastic component (21) and/or second elastic component (22) are logical
It crosses connection component (3) to connect with the waist-shaped hole (10), and position of the connection component (3) in the waist-shaped hole (10) can
It adjusts.
3. stiffness-adjustable rack foot pad according to claim 2, which is characterized in that the connection component (3) includes spiral shell
(31) and nut (32) are followed closely, offers through-hole (20), institute on first elastic component (21) and/or second elastic component (22)
Screw (31) are stated across the through-hole (20) and the waist-shaped hole (10) and are cooperatively connected with the nut (32).
4. stiffness-adjustable rack foot pad according to claim 3, which is characterized in that the nut (32) is located at the pressure
The top of plate (1), the screw (31) also extend through an elastomeric pad being set between the pressing plate (1) and the nut (32)
(33)。
5. stiffness-adjustable rack foot pad according to claim 1, which is characterized in that first elastic component (21) and institute
Stating the second elastic component (22) is U-typed part, and the U-typed part includes bottom edge (201) and prolongs from the two sides of the bottom edge (201)
What is stretched out is in two sides (202,203) opposing upper and lower, is offered on two sides (202,203) for realizing institute
State the first elastic component (21) notch (204) nested with the second elastic component (22) relative dislocation.
6. stiffness-adjustable rack foot pad according to claim 1, which is characterized in that further include connecting column (4), the company
The one end for connecing column (4) is connect with the pressing plate (1), and the other end is connect with the rack.
7. stiffness-adjustable rack foot pad according to claim 6, which is characterized in that the connecting column (4) is in the pressure
The center of plate (1) is connect with the pressing plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710294400.1A CN107023736B (en) | 2017-04-28 | 2017-04-28 | A kind of stiffness-adjustable rack foot pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710294400.1A CN107023736B (en) | 2017-04-28 | 2017-04-28 | A kind of stiffness-adjustable rack foot pad |
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| Publication Number | Publication Date |
|---|---|
| CN107023736A CN107023736A (en) | 2017-08-08 |
| CN107023736B true CN107023736B (en) | 2019-05-03 |
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ID=59527592
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710294400.1A Active CN107023736B (en) | 2017-04-28 | 2017-04-28 | A kind of stiffness-adjustable rack foot pad |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201096160Y (en) * | 2007-11-09 | 2008-08-06 | 中国船舶重工集团公司第七一一研究所 | Rigidity-changing regulation type rubber vibration isolator |
| CN201747858U (en) * | 2010-06-30 | 2011-02-16 | 奇瑞汽车股份有限公司 | Dynamic vibration absorber with adjustable frequency |
| CN103225666A (en) * | 2013-04-02 | 2013-07-31 | 合肥工业大学 | Variable-stiffness variable-damping vibration absorber based on characteristics of magneto-rheological fluid |
| CN203161947U (en) * | 2013-03-21 | 2013-08-28 | 洛阳双瑞橡塑科技有限公司 | Frequency-adjustable dynamic vibration absorber |
-
2017
- 2017-04-28 CN CN201710294400.1A patent/CN107023736B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201096160Y (en) * | 2007-11-09 | 2008-08-06 | 中国船舶重工集团公司第七一一研究所 | Rigidity-changing regulation type rubber vibration isolator |
| CN201747858U (en) * | 2010-06-30 | 2011-02-16 | 奇瑞汽车股份有限公司 | Dynamic vibration absorber with adjustable frequency |
| CN203161947U (en) * | 2013-03-21 | 2013-08-28 | 洛阳双瑞橡塑科技有限公司 | Frequency-adjustable dynamic vibration absorber |
| CN103225666A (en) * | 2013-04-02 | 2013-07-31 | 合肥工业大学 | Variable-stiffness variable-damping vibration absorber based on characteristics of magneto-rheological fluid |
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